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Investigation of Responsive Characteristics of Photosynthetic Cells to Environmental Stimuli by Using On-chip Local Environmental Control

Research Project

Project/Area Number 21H04543
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 20:Mechanical dynamics, robotics, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Arai Fumihito  東京大学, 大学院工学系研究科(工学部), 教授 (90221051)

Co-Investigator(Kenkyū-buntansha) 杉浦 広峻  東京大学, 大学院工学系研究科(工学部), 助教 (10844805)
魚住 信之  東北大学, 工学研究科, 教授 (40223515)
丸山 央峰  名古屋大学, 工学研究科, 准教授 (60377843)
金子 真  名城大学, 理工学部, 教授 (70224607)
Project Period (FY) 2021-04-05 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥42,380,000 (Direct Cost: ¥32,600,000、Indirect Cost: ¥9,780,000)
Fiscal Year 2023: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
Fiscal Year 2022: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2021: ¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Keywordsマイクロ・ナノデバイス / 超精密計測 / マイクロ流体チップ / ナノバイオ / 機械力学・制御
Outline of Research at the Start

マイクロ流体チップとロボットシステムを統合し,光合成モデル細胞である藍藻に対して,外部刺激となるpLオーダーの微小液滴を,msオーダーの短時間で反応させる局所環境を構築し,これに応答する細胞特性の動的変化を単一細胞レベルで計測する.この計測系において,特定のイオン輸送体の遺伝子を欠損した遺伝子不活化株と正常株の比較を行い,特定のイオン輸送体の特性を調べる.オンチップでの局所環境状態の計測制御技術,単一細胞計測技術,動的力センシングシステム理論などを確立し,これらを活用することで,藍藻の外部刺激に対する動的応答特性を明らかにし,その仕組みを解明する.さらに,藍藻以外の単一細胞に拡張する.

Outline of Final Research Achievements

We constructed a system consisting of an on-chip robot and a microfluidic chip. We evaluated the viability of cyanobacteria and measured water permeability at the single-cell level based on changes in cell size in response to rapid changes in osmotic pressure on the order of a few milliseconds. We also measured the stiffness of single cells in response to rapid changes in osmotic pressure on the order of a few milliseconds. We measured and compared the changes in size and hardness before and after dynamic osmotic pressure changes for a cyanobacterial strain with an inactivated transporter gene and a normal strain. We have constructed an engineering technology platform for evaluating the response characteristics of single cells to external stimuli using on-chip local environment control. We also evaluated the characteristics of cyanobacteria related to their ability to adapt to changes in osmotic pressure, and gained knowledge about their mechanical properties.

Academic Significance and Societal Importance of the Research Achievements

細胞を単一レベルで評価することは困難であり,その機能の多くは未解明なままである.本研究は,オンチップ局所環境制御による単一細胞の外部刺激応答特性を評価するための工学的技術基盤を確立するとともに,藍藻の浸透圧変化に適応する機能に関わる特性を評価し,機械的特性の知見を得た.細胞には数多くの種類のイオン輸送体が存在し,それぞれの役割は異なる.イオン輸送体の役割が徐々に解明され,人為的にイオン輸送体の発現数を調整することで,環境に適応する藍藻をつくり,制御管理することが可能である.これによって創生される藍藻や制御技術は,太陽光を利用した再生エネルギー生産,物質生産,環境保全に結び付くと期待できる.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Comments on the Screening Results   Annual Research Report
  • Research Products

    (15 results)

All 2024 2023 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (12 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results)

  • [Journal Article] Instantaneous extracellular solution exchange for concurrent evaluation of membrane permeability of single cells2024

    • Author(s)
      Shingo Kaneko, Sugiura Hirotaka, Masaru Tsujii, Hisataka Maruyama, Nobuyuki Uozumi and Fumihito Arai
    • Journal Title

      Lab on a chip

      Volume: 24 Issue: 2 Pages: 281-291

    • DOI

      10.1039/d3lc00633f

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Integration of Microfluidic Chip and Probe with a Dual Pump System for Measurement of Single Cells Transient Response2023

    • Author(s)
      Xu Du, Shingo Kaneko, Hisataka Maruyama, Hirotaka Sugiura, Masaru Tsujii, Nobuyuki Uozumi, Fumihito Arai
    • Journal Title

      Micromachines

      Volume: 14(6) Issue: 6 Pages: 1210-1210

    • DOI

      10.3390/mi14061210

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dynamic Deformation Measurement of an Intact Single Cell via Microfluidic Chip with Integrated Liquid Exchange2023

    • Author(s)
      Xu Du, Di Chang, Shingo Kaneko, Hisataka Maruyamaa, Hirotaka Sugiura, Masaru Tsujii, Nobuyuki Uozumi, Fumihito Arai
    • Journal Title

      Engineering

      Volume: Online 15 February 2023 Pages: 94-101

    • DOI

      10.1016/j.eng.2022.08.020

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] On-chip extracellular solution exchange method with air valve function using air-liquid interface control2024

    • Author(s)
      Shingo Kaneko, Hirotaka Sugiura, Masaru Tsujii, Nobuyuki Uozumi, Fumihito Arai
    • Organizer
      The 19th IEEE International Conference on Nano/Micro Engineered and Molecular Systems
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 急激な浸透圧変化を受ける単一細胞の複数同時計測の自動化2023

    • Author(s)
      金子真悟,辻井 雅,魚住信之,新井史人
    • Organizer
      日本機械学会ロボティクス・メカトロニクス講演会2023
    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
  • [Presentation] 高速浸透圧応答による体積変化計測へ向けた単一細胞パターニング2023

    • Author(s)
      金子真悟,辻井雅,魚住信之,新井史人
    • Organizer
      化学とマイクロ・ナノシステム学会第48回研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Evaluation of osmotic water permeability of cyanobacteria in single-cell scale2023

    • Author(s)
      Shingo Kaneko, Masaru Tsujii, Nobuyuki Uozumi and Fumihito Arai
    • Organizer
      34th 2023 International Symposium on Micro-NanoMechatronics and Human Science
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 細胞の生死状態を考慮した単一細胞の水透過率計測システム2023

    • Author(s)
      金子真悟,辻井雅,魚住信之,新井史人
    • Organizer
      第24回計測自動制御学会システムインテグレーション部門講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] High-speed and Pinpoint Liquid Exchange on Microfluidic Chip Using 3D Printed Double-barreled Microprobe with Dual Pumps2023

    • Author(s)
      Xu Du, Shingo Kaneko, Hisataka Maruyama, Hirotaka Sugiura, Fumihito Arai
    • Organizer
      The 36th International Conference on Micro Electro Mechanical Systems
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 急激な浸透圧変化に対する藍藻の浸透圧調整機能の評価2022

    • Author(s)
      金子真悟,杉浦広峻,辻井 雅,魚住信之,新井史人
    • Organizer
      日本機械学会ロボティクス・メカトロニクス講演会2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Evaluation of viability of single synechocystis sp. pcc 6803 in reaction to high-speed osmotic pressure change2022

    • Author(s)
      Shingo Kaneko, Masaru Tsujii, Nobuyuki Uozumi, Fumihito Arai
    • Organizer
      33rd 2022 International Symposium on Micro-NanoMechatronics and Human Science
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High-speed liquid exchange using a 3D printed probe with dual pumps2022

    • Author(s)
      Xu Du, Shingo Kaneko, Hisataka Maruyama, Hirotaka Sugiura, Fumihito Arai
    • Organizer
      33rd 2022 International Symposium on Micro-NanoMechatronics and Human Science
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 急激な浸透圧変化に対する藍藻の浸透圧調整機能の評価2022

    • Author(s)
      金子真悟,辻井 雅,魚住信之,新井史人
    • Organizer
      日本機械学会ロボティクス・メカトロニクス講演会 2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] Measurement of Dynamic Deformation of Single Synechocystis sp. strain PCC 6803 Using Microfluidic Chip with Integrated Liquid Exchange2021

    • Author(s)
      Xu Du, Di Chang, Shingo Kaneko, Hisataka Maruyama, Hirotaka Sugiura, Masaru Tsujii, Nobuyuki Uozumi and Fumihito Arai
    • Organizer
      Proc. 2021 International Symposium on Micro-NanoMechatronics and Human Science (MHS2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] マイクロ流体チップ内の高速液滴置換による単一細胞の浸透圧ストレス応答計測2021

    • Author(s)
      金子真悟,辻井 雅,魚住信之,新井史人
    • Organizer
      日本機械学会ロボティクス・メカトロニクス講演会 2021
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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